1 vote

Risk Bridge


Risk Bridge

Photo taken by Chris Gonnerman in October 2011


BH Photo #215548



Pony truss bridge over Wyaconda River on Orange Street (CR 429)
Lewis County, Missouri
Intact but closed to all traffic
Future prospects
Bridge is presently closed for damage to one of the stone abutments per the Canton Press News Journal 06-27-2019. Future status unknown.
Built 1904
Pin-connected, 5-panel Pratt pony truss
Length of largest span: 75.1 ft.
Total length: 76.1 ft.
Deck width: 11.8 ft.
Also called
Orange Street
Approximate latitude, longitude
+40.16860, -91.58658   (decimal degrees)
40°10'07" N, 91°35'12" W   (degrees°minutes'seconds")
Approximate UTM coordinates
15/620353/4447428 (zone/easting/northing)
Quadrangle map:
Land survey
T. 62 N., R. 06 W., Sec. 17
Average daily traffic (as of 2018)
Inventory numbers
MO 056-122000.7 (Missouri off-system bridge number)
MONBI 16480 (Missouri bridge number on the National Bridge Inventory)
BH 21888 (Bridgehunter.com ID)
Inspection report (as of January 2018)
Overall condition: Poor
Superstructure condition rating: Poor (4 out of 9)
Substructure condition rating: Poor (4 out of 9)
Deck condition rating: Satisfactory (6 out of 9)
Sufficiency rating: 20.4 (out of 100)
View more at BridgeReports.com


Built 1904 (561)
Built during 1900s (7,224)
Closed (2,665)
Lewis County, Missouri (58)
Missouri (6,302)
One-lane traffic (7,606)
Owned by county (20,784)
Pin-connected (3,901)
Pony truss (16,182)
Pratt pony truss (3,637)
Pratt truss (9,296)
Span length 75-100 feet (6,428)
Total length 75-100 feet (6,584)
Truss (32,779)
Wooden deck (6,069)

Update Log 

  • June 27, 2019: Updated by K. Allen Ballard: Bridge is closed for abutment damage; future unknown.
  • January 5, 2018: Updated by Christopher Finigan: Added category "Pin-connected"
  • January 5, 2018: New photos from K. Allen Ballard
  • January 4, 2018: New photos from K. Allen Ballard
  • October 1, 2011: New photos from Chris Gonnerman



Risk Bridge
Posted June 27, 2019, by Tony Dillon (spansaver [at] hotmail [dot] com)

I can see the separation in the stone abutment in one of the pics. Hopefully they choose to repair it or at the worse jack the bridge up and replace it with a concrete one.

Ironic name btw...